The oceans are rising and coastal cities around the world are threatened. But the Dutch are proving we may not all have to run for higher ground. And their message is catching on in the US. From The World & the GroundTruth Project.

High water in the seas offshore and rivers on land increasingly threatens Indonesia's capital city. The government has big plans to deal with it, but some of the city's poorest residents say the projects will leave them high and dry.

When it comes to preparing for sea-level rise in coastal cities, the Dutch have a big head start on the rest of the world. And their best array of tools may be on display in and around the port city of Rotterdam.